Lacy had nine of the Cougars first 12 points, but then went scoreless for nearly 20 minutes.

“I was trying to find my teammates,” Lacy said, adding that he didn’t want to force his shot.

Cougars coach Ken Bone said Lacy was kneed in the thigh in the first half, and that affected him.

The Beavers six Pac-12 wins are more than or equal to its total conference wins in 15 of the last 20 seasons.

Oregon State came into the game led by Roberto Nelson with 21.3 points per game. He had 12 points on 1-of-9 shooting on Thursday, but added seven assists for the Beavers.

Eric Moreland, who had one block against Washington State, needs three more to become Oregon State’s career leader in that category. Scott Haskin holds the record with 172 blocks.

The Beavers regular colors are orange and black, but the squad wore their Nike N7 turquoise-hued uniforms against the Cougars.

N7 is a program designed to bring sport and its healthy benefits to American Indian and Aboriginal communities in the United States and Canada. Since 2009, the N7 fund has raised more than $2 million for youth sport programs.

Washington State has lost its last five games, and nine of its last 10. The team has not won a Pac-12 game away from Pullman, and is ranked last in the conference in points scored per game and free throw percentage.

In other games Thursday:

North Carolina 74, No. 5 Duke 66: CHAPEL HILL, N.C. — Marcus Paige scored all 13 of his points in the second half, including two big baskets in the final 2½ minutes, to give North Carolina its eighth straight win.